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MR.  J.  O.  WESTWOOD  ON  NYCTERIBIA. 
Latreille,  in  his  '  Genera  Crustaceoram,  &c.',  after  describing  his  Nyct.  Vespertilionia, 
stated,  "  Speciem  alteram  Indicam  possideo  ;"  and  Dr.  Leach  observed  of  his  Phthiri- 
dium  Blainvillii,  which  he  received  from  M.  de  Blainville,  "  This  is  probably  the  species 
alluded  to  by  Latreille  in  his  Genera";  whereupon  Latreille  subsequently  described  his 
insect,  which  he  received  from  M.  Cuvier,  as  identical  with  Dr.  Leach's  ;  giving  at  the 
same  time  as  its  habitat  the  Isle  of  France,  instead  of  India,  as  previously  stated  by 
him.  The  species  are  quite  distinct  both  in  colour  and  size,  as  well  as,  it  would  seem, 
in  locahty. 
5.  Nycteribia  Roylii. 
Nyct.  obscure  nigra,  pedibus  fuscescentibus,  elongatis,  vix  compressis,  coxis  anticis  brevibus  ; 
abdomine  ovato-conico,  depresso,  5-articulato ,  apice  subtruncato,  stylis  duobus  incurvis 
subtus  armato ;  capite  compresso.  (c?) 
Long.  corp.  lin.  1^. 
Hab.  in  India  Orientali. 
Mus.  Dom.  Royle. 
6,  Nycteribia  Dufourii. 
Nyct.  pedibus  elongatis,  coxis  abbreviatis ;  oculis  rotundatis  sessilibus  simplicibus ;  ab- 
domine ?  ovali,  apice  setigero,  segmentis  destitute,  supra  paribus  tribus  serierum  setarurn 
brevium  rigidarum  instruct o ;  ?  oblongo,  6-articulato,  apice  subtus  stylis  destituto  ? 
Long.  corp.  lin.  H?,  lin.  \. 
Nyct.  Vespertilionis,  T>uf.,  in  Ann.  des  Sci.  Nat.,  xxii.  p.  381.  pi.  13.  fig.  4. 
Hab.  in  Vespertilione  murino  Galli2e. 
7.  Nycteribia  pedicularia,  Latr. 
Nyct.  fusca,  corpore  supra  pedibusque  flavo-rufescentibus,  thorace  subtits  fusco-rufescente 
lined  longitudinali  mediand  nigra ;  pedibus  longis  arcuatis,  coxis  anticis  brevibus  sub- 
cylindricis,  femoribus  tibiisque  valde  compressis  fere  ellipticis ;  pectinibus  lateralibus 
thoracis  brevibus ;  abdomine  setis  rigidis  armato. 
Nyct.  pedicularia,  Latr.,  Hist.  Nat.,  xiv.  p.  403.  pi.  l\2.  fig.  14. 
Nyct.  Vespertilionis,  Latr.,  Gen.  Crust,  ^c,  iv.  p.  364.  pi.  15.  fig.  II.  et  in  Nouv. 
Diet.  d'Hist.  Nat.,  tom.  xxiii. 
I  have  restored  Latreille's  original  name  to  this  species,  considering  it  as  distinct 
from  any  of  the  others,  with  the  exception  perhaps  of  Hermann's  Nyct.  Vespertilionis. 
His  character,  on  which  mine  is  founded,  is  subjoined'. 
'  "  Corps  brun,  dessus  du  corps  et  pattes  d'un  jaunatre-rouss^tre,  dessous  du  corselet  d'un  brun  rougeatre 
avec  un  ligne  noire  au  milieu,  pattes  longues  arquees,  2''  article  des  deux  handles  anterieures  court  presque 
cylindrique,  cuisses  et  jambes  tres  comprim6es  presque  elliptiques,  les  deux  rang^es  des  dents  des  extremit^s 
laterales  ct  sup^rieures  du  corselet  courtes,  abdomen  heriss6  de  poils."  Latr.,  Hist.,  loc.  cit. 
